Lorenzo Becchi - ominiverdi
    lorenzo at ominiverdi com

Luca Casagrande - doktoreas
    luca.casagrande at gmail com

Jachym Cepicky - jachym
    jachym.cepicky at centrum cz

Stepan Kafka - stepan
    kafka at email cz

Panagiotis Skintzos  - pana
     p at pskintzos net

and others, see

    http://wald.intevation.org/project/memberlist.php?group_id=22